James s



S. HA-GERTY.

Street-Lamps.

YPaftntec September 9,1873.

JAMES S. HAGERTY, GF BALTIMORE, MARYLAND.

IWPRVNENT EN STREET-LAMPS.

Speciiication forming part of Letters Patent No. hS, dated September 9, 1873 application led August 15, 1373.

To all whom it may concern:

Be it known that I, JAMES S. HAGERTY, of Baltimore city, State of Maryland, have invented a new and Improved Street-Lamp; and I do hereby declare that'the following is a full, clear, and exact description of the same, reference beinghad to the accompanyingdrawing forming a part of this specification, in which- Figure l is a sectional elevation partly broken out. Fig. 2 is a horizontal section.

The invention relates to means for securing the glass cover to lamps, and particularly street-lamps, so that it may be comparatively inexpensive7 securely held, and easily detached.

The invention will first be fully described, in connection with all that is necessary to a full understanding thereof, and then clearly pointed out in the claims.

' A is the post, from which there upwardly projects a cylindrical tube or burner, a, upon which ts the socket b of the holder B. The holder B also has a grooved socket, b1, placed directly over the burner, the shoulders b2 b2, and other reversed shoulders b3 b3 on `flan ges b4 b4. On the former shoulders, and under the latter, are inserted the arms c o, having the subjacent stops c1 c1 of the circular seat C. 0n the annular inner -harige c2 of this seat rests the glass. D is the cap, which is to close over the top of glass to prevent it from tipping, and hold it steadily in position. This cap has a dome-shaped concavity on its under side, and a pendent ange, E, with a series of holes, e, in its upper edge. This Bange may also possess an annular corrugation to strengthen :it, and of suflicient circumference to t snugly around the upwardly-tapering top of glass F. 0n the top of cap .Dis a fixed or detachable rod, G, which has, at right angles thereto, a lateral stud, g, that fits in the groove of socket b1.

The application is as follows: The seat C is locked to the holder B by being held in an oblique plane in front of the holder, and pushed forward until the stops c1 c1 have passed the shoulders t2 b2, when it is permitted to assume a horizontal position. The ringiiange f, on the lower end of glass, is then placed within the ring C, and on its inner annular flange 02 the cap D, which ordinarily dependscfrom the socket b1, by the lateral stud g that overlaps the top thereof, being turned until this stud comes to the groove, when the cap is let down upon the glass. By now turning the cap the stud g is brought against an inclined cani surface, b5, near the bottom of socket. This eft'ectually fastens the glass down to its seat, so that it is deprived ot' all play when shaken or jarred. It will thus be perceived that I have a street-lamp supported by one upright only, whereby less obstruction is offered to the transmission of light, while economy in expense is also secured.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The shoulders b2 and reversely-shouldered flanges b4 b4 combined with the arms o cto hold the seat C to the holder B, in the manner described.

2. A lamp seat, C, having the subjacent stops c1 c1 combined with a holder, B, having the shoulders b2 b2 and ilanges b4 b4, as and for the purpose described.

3. The grooved subjacently-concaved and curved holder-socket bl combined With the sliding cap-rod G having the side stud g, as

and for the purpose described.

JAS. S. HAGEBTY.

Witnesses:

WM. SMYTH, O.- H. BARNEs. 

